In the QPC model, when a meson decay occurs, a quark-antiquark pair is created from vacuum with the quantum number \(J^{PC}=1^{++}\) , and combines with the corresponding antiquark and quark in the initial meson to produce two final mesons. The general expression of the mock state wave function involving in the process \(A\rightarrow B+C\)  is defined by [1]}
\(\begin{split}& \left|A\left(n_A^{2S_A+1}L_{AJ_AM_{J_A}}\right)\left({P}_A\right)\right\rangle \nonumber \\&\equiv \sqrt{2E_A}\sum \limits _{M_{L_A},M_{S_A}}\left\langle L_AM_{L_A}S_AM_{S_A}|J_AM_{J_A}\right\rangle \\&\quad \times \int d^3{p}_A\psi _{n_AL_AM_{L_A}}({p}_A)\chi _{S_AM_{S_A}}^{12}\phi _A^{12}\omega _A^{12}\nonumber \\&\quad \times \left|q_1\left(\frac{m_1}{m_1+m_2}{P}_A+{p}_A\right)\bar{q}_2\left(\frac{m_2}{m_1+m_2}{P}_A+{p}_A\right)\right\rangle ,\end{split}\) 
